Daily Dispersion Outlook
Issued by NWS Pendleton, OR

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000
AUUS46 KPDT 051142
DDOPDT

DAILY DISPERSION OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
442 AM PDT SAT SEP 5 2015

*** AIR DISPERSION CATEGORIES:   GOOD, FAIR, POOR ***

FOR THE COLUMBIA BASIN FROM PENDLETON TO WALLA WALLA AND PASCO

                              7:00 AM             AFTERNOON
SURFACE WINDS                 SW 11-15 MPH.       SW 14-20 MPH.
TRANSPORT WINDS               SW 17-24 MPH.       NW 13-19 MPH.
MIXING HEIGHT                 2500 FT MSL.        7000 FT MSL.
DISPERSION CATEGORY           GOOD.               GOOD.
OUTLOOK FOR SUN SEP 6         FAIR.

VENTILATION INDEX (CATEGORY)  266 (POOR).         673 (GOOD).
OUTLOOK FOR SUN SEP 6         837 (GOOD).

FOR THE UPPER YAKIMA VALLEY INCLUDING YAKIMA...UNION GAP...
SELAH...AND NACHES AREA

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 5-9 MPH.          NW 11-15 MPH.
TRANSPORT WINDS               NW 10-14 MPH.       NW 14-18 MPH.
MIXING HEIGHT                 NEAR SURFACE.       9500 FT MSL.
DISPERSION CATEGORY           FAIR.               GOOD.
OUTLOOK FOR SUN SEP 6         FAIR.

VENTILATION INDEX (CATEGORY)  117 (POOR).         840 (GOOD).
OUTLOOK FOR SUN SEP 6         259 (POOR).

FOR THE GRANDE RONDE RIVER VALLEY

                              7:00 AM             AFTERNOON
SURFACE WINDS                 W 8-11 MPH.         W 11-11 MPH.
TRANSPORT WINDS               SW 4-7 MPH.         W 13-14 MPH.
MIXING HEIGHT                 5000 FT MSL.        7500 FT MSL.
DISPERSION CATEGORY           FAIR.               FAIR.
OUTLOOK FOR SUN SEP 6         GOOD.

VENTILATION INDEX (CATEGORY)  132 (POOR).         477 (FAIR).
OUTLOOK FOR SUN SEP 6         603 (GOOD).

SELECT AFTERNOON FORECAST VENTILATION INDICES FOR SOME CITIES
CLE ELUM      409 (FAIR)
ELLENSBURG    652 (GOOD)
GOLDENDALE    692 (GOOD)
TRI-CITIES    622 (GOOD)
WALLA WALLA   331 (FAIR)
YAKIMA        921 (GOOD)
BEND          680 (GOOD)
PRINEVILLE    799 (GOOD)
ENTERPRISE    217 (POOR)
HERMISTON     806 (GOOD)
JOHN DAY      767 (GOOD)
LA GRANDE     542 (FAIR)
MADRAS        906 (GOOD)
MEACHAM       581 (FAIR)
PENDLETON     860 (GOOD)
REDMOND       785 (GOOD)
SENECA        791 (GOOD)
THE DALLES    700 (GOOD)

METEOROLOGICAL INFORMATION PROVIDED IN THIS PRODUCT REPRESENTS ONLY
SOME OF THE FACTORS USED IN BURN DECISIONS.  BURN DECISIONS ARE
OUTSIDE THE PURVIEW OF THE NATIONAL WEATHER SERVICE.

THE VENTILATION INDEX IS A TOOL TO ASSIST SMOKE MANAGEMENT
AGENCIES IN DETERMINING BURN OR NO BURN DECISIONS.  A VENTILATION
INDEX GRAPHIC IS ON THE PENDLETON WEBSITE AT THE FOLLOWING ADDRESS:
HTTP://WWW.WRH.NOAA.GOV/PDT/FORECAST/FWXGRAPHICALVENTILATION.PHP?WFO=PDT

IF YOU WOULD LIKE TO KNOW MORE ABOUT THIS PRODUCT...CONTACT THE
NATIONAL WEATHER SERVICE IN PENDLETON.
$$



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